Punch.



D. E. LYNCH.

Patented Oct. 5, 1915.

Witnesses vex-mm Attorneys.

D sr

DANIEL E. LYNCH, OF WIGHITA, KANSAS.

PUNCH.

Specification of Letters Patent.

Patented-oat. 5, 191.5.

I Application filed April 28, 1915. Serial No. 24,489.

T 0 all whom it may 0011061 11:

Be it known that I, DANIEL E. LYNCH, a citizen of the United States, residing at Wichita, in the county of Sedgwick and State of Kansas, have invented a new and useful Punch, of which the following is a specification.

This invention relates to punches for use in perforating bundles of paper for the reception of brads or like fastening means, the

same being especially useful in the art of bookbinding. Heretofore where it has been necessary to produce a perforation in a stack of paper, it has been a diflicult matter to withdraw the perforating prong from the paper without disturbing the papers or getting them out of their relative positions. Consequently, the operation of inserting a fastener through the openings produced by the punch has been rendered quite diflicult and considerable loss of time has often resulted.

One of the objects of the present invention is to provide a punch or perforator having means whereby the papers, after being perforated, can be lifted off of the prong without being disturbed relative to each other, thus leaving the apertures in the papers forming the stack in alinement so that a fastener can be inserted readily into them.

Another object is to provide means of this character which can be applied to an ordinary perforating punch such as used by bookbinders and others.

With the foregoing and'other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings the pre ferred form of the invention has been shown.

In said drawings :-Figure 1 is a view partly in side elevation and partly in section of a punch having the present improvements combined therewith. Fig. 2' is a section on line AB Fig. 1. I

Referring to the figures by characters of reference 1 designates the base of the punch, the same having an upstanding angular arm 2 which overhangs the base and constitutes" a guide for a plunger 2 provided with a foot 3 at its lower end and with a head l at its upper end, there being a spring 5 on the plunger and bearing at its ends upon the arm 2 and head 1, respectively, thus to hold the foot 3 normally elevated. A recess 6 is formed in the foot and is adapted to receive a perforating prong 7 extending upwardly from the base, when the foot is pushed downwardly out of its normal position.

' A recess 8 is formed in the base 1, the prong 7 extending upwardly through this recess. Said recess registers with an opening 9 formed in the lower portion of the arm 2 and pivotally mounted in said opening is a lever 10 one arm of which lies snugly within the recess 8 and is forked, as at 11, so as to lie close to and straddle the prong 7. The other arm of lever 8 is slotted, as at 12 to receive a pivot pin 13 extending through the forked lower end 14. of a plunger 15, this plunger being slidably mounted in an car 16 extending from the arm 2. The upper end of plunger 15 has a head 17 and mounted on the plunger between the car 16 and head 17 is a controlling spring 18. This spring serves to hold head 17 normally raised and the forked end 11 of lever 10 normally seated in the recess 8 with its up per face flush with the top of the base 1.

In using the punch herein described the stack of papers to be perforated is placed under the foot 3 and over the prong l. The plunger 2 is then forced downwardly, thus forcing the papers downwardly onto the prong 7, the point of the prong entering the opening 6. Plunger 2 is then released and is returned to its raised position by spring 5. Plunger 15 is then depressed against the action of its spring 18, causing the fork 11 to swing upwardly, thus lifting the papers off of the prong 7 without shifting them relative to each other, thus leaving the openings in the papers forming the stack, in proper alinement so that a fastener can be inserted readily into them.

It will be seen that a lifting means such as constitutes the present invention can be applied readily to an ordinary form of punch without adding materially to the cost thereof.

lVhat is claimed is The combination with a base having a recess, and an arm upstanding from the base,

of a yieldingly supported plunger slidably mounted in the arm'and having a recessed foot, a perforating prong extending up- Wardly through the recess in the base, a lever fulcrumed in the arm and having a forked arm normally seated in the recess With its upper face flush With the top of the base,

and a yieldingly supported plunger connected to the arm and lever for shifting the forked end of the lever upwardly relative 18 Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

